Gli strumenti e gli esiti del progetto nei centri storici. Il piano particolareggiato di Calangianus (SS) tra cultura, normativa e prassi

The necessity to “revive the minor historic centers” is a complex issue which currently compares to depopulation; do we have to conserve or transform our centers in order to re-inhabit them? The response will serve to direct their future management with the aim of protecting and implementing the potential for use. The creation of normative tools often occurs in a summary way, with an inconsistent approach to protection, due to reduced resources and time, and with superfi cial and repetitive assessments, often adopting standard methodologies in different realities. On the contrary, it would be necessary to operate on the urban and architectural scale to devise design choices which enhance the “historic center” and protect the building stock. In recent decades, a stereotyped model of reconstruction of traditional architecture has often been adopted, even with types that never locally existed. On the other hand, we can observe an unjustifi ed priori rejection towards the recovery of these architectures: we can recorded innumerable cases of potentially reinhabitable but abandoned buildings due to the absence of useful functions and services in the town center. The historical knowledge of the village about its constructive stratifi cations is the fi rst needed act for its conservation and innovation; it is necessary to deeply understand the richness of historical heritage and the criticalities of incongruous changes and it allows to adopt improving choices for recovery and to reject the simple implementation of volumes. In this way the “Piano Particolareggiato” of the hilly town of Calangianus (Sassari) aims to be a tool for rediscovering the building stock, to be valued and reused pursuing its conservation, transformation and redevelopment, mitigating incongruous alterations and protecting material and constructive local values.